Hi Jacob,
We have a Known Issue DT449052 about the error message you are getting.
You will need to upgrade to the latest License manager 9.6.2 /Tools 9.10
License manager 9.6.2 /Tools 9.10: https://www.ibm.com/support/pages/node/6607649
Go down to "For details on Removing the prior version of the Concurrent License Manager and Tools" and click on the link with instructions on removing/installing.
FYI: When installing the latest license manager there will be 2 installs 1- Manager and 2 - Tools
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RHONDA Stewart
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Original Message:
Sent: Mon April 13, 2026 03:28 PM
From: Jacob Mizraji
Subject: Sentinal activation error
I'm getting this same error as well when trying to run LicenseActivator. Did anyone find a solution?
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Jacob Mizraji
Original Message:
Sent: Thu December 11, 2025 04:35 PM
From: Boyd Westerman
Subject: Sentinal activation error
Hello, I'm getting this error: 'java.lang.StringIndexOutOfBoundsException: String index out of range: -1'
A similar post said C++ 2015 Runtime needs to be updated. That error was out of range: -4. On our server C++ 2010 was updated a little over a month ago. I've been using the same server for our license manager for 9 years now and never had a problem. Any ideas?
thank you - BW
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Boyd Westerman
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